1-Amidino-3-(2,6-dimethylphenyl)-urea hydrochloride 55831-94-2 68407-08-9 N-(Aminoiminomethyl)-N'-(2,6-dimethylphenyl)urea hydrochloride Urea, 1-amidino-3-(2,6-dimethylphenyl)-, hydrochloride Urea, N-(aminoiminomethyl)-N'-(2,6-dimethylphenyl)-, monohydrochloride